"And what is mastery of the whole? Mastery of the whole, real violin
mastery, I think, lies in the control of the interpretative problem, the
power to awaken emotion by the use of the instrument. Many feel more
than they can express, have more left hand than bow technic and, like
Kubelik, have not the perfected technic for which perfected playing
calls. The artist who feels beauty keenly and deeply and whose
mechanical equipment allows him to make others feel and share the beauty
he himself feels is in my opinion worthy of being called a master of the
violin."